Scram cannon

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The scram cannon is a hypothetical kinetic energy weapon based on ram accelerator technology. The scram cannon uses a projectile that uses supersonic combustion ramjet technology to increase the Muzzle velocity to levels that are impossible with normal gunpowder based guns; firearms are limited by the speed of sound in the propellant gases, which limits the velocities to about Mach 5 (see internal ballistics).


A scram cannon uses a sealed barrel filled with a fuel/oxidizer mixture that undergoes supersonic combustion as the projectile passes by. The energy liberated by this combustion acts to propel the projectile through reaction, like a jet or rocket engine, rather than by pressure as in a gun. This allows the scram cannon to launch sizeable projectiles at velocities previously only attainable with railguns, light-gas guns and rockets, but with significantly simpler techniques. Scram cannons often show up in science fiction and role-playing game discussion boards.[citation needed]


The concept of a supersonic combustion ram cannon was patented in 1988,[1] and versions were built as far back as 1994 to research scramjet technology.[2]

See also[edit]


  1. ^ U.S. Patent 4,726,279: "Wake stabilized supersonic combustion ram cannon"
  2. ^ "Ramming Speed". Discover Magazine. March 1994.